iPad mirroring was introduced with the introduction of the iPad 2 back in February, but it required the assistance of a $40 cable. That cable is now unnecessary, however. As you can see from some brave soul who installed the beta on his iPad, AirPlay mirroring is a serviceable, if not quite beautiful, solution for using movie and TV apps on your big screen. The system UI and most apps come through in a 4:3 aspect ratio, but depending on the app, certain content will appear in 16:9.